城市道路挡墙基础防沉降措施设计

Design of Anti-settlement Measures for Retaining Wall Foundation of Urban Road

摘要:

随着城市的不断建设，立体交通的形式在城市道路中大量应用。随着时间的推移和交通量的不断增长，沉降问题逐渐在道路中显现，特别是与桥梁台背衔接的挡墙段的不均匀沉降，可造成肉眼可见的沉降差异，导致挡墙段顶部与桥梁段顶部的防撞护栏出现明显的错台或者拉裂，进一步导致防撞护栏顶部的附属设施如声屏障等的扭曲、破坏。一旦产生此种破坏，后期加固处理以及修复则较为困难。为减小挡墙段与桥梁段的沉降差异，避免出现上述问题，结合一处工程运用实例，对挡墙基础防沉降措施进行探讨，为后续类似建设工程提供一些可能的参考。

Abstract:

With the continuous construction of city, the form of three-dimensional traffic is widely used in urban roads. With the passage of time and the continuous growth of traffic volume, the settlement problem gradually appears in the roads, especially the uneven settlement at the retaining wall section connected with the bridge abutment back, which may cause the visible settlement difference. The anti-collision guardrail at the top of the retaining wall section and the top of the bridge section is obviously staggered or cracked, which further leads to the distortion and damage of the auxiliary facilities on the top of the anti-collision barrier such as the sound barrier. Once such damage occurs, it is difficult to reinforce and repair in the later stage. In order to reduce the settlement difference between the retaining wall section and the bridge section, and to avoid the above problems, combined with an engineering application example, the anti-settlement measures of retaining wall foundation are discussed, which provides some possible references for similar construction projects in the future.